The REAL Toughbook Laptop MOD

I plan to bypass the monitors 120V to 12V source and connect it to a bank of 12V batteries, the MB will have a 6-24VDC to ATX power Supply connected to the batteries as well, a 12V plug in adapter to charge and power it, and a 12V cigarette lighter adapter to charge and power it on the go! I will be using 1 or 2 12V Childrens Electric Scooter Batteries, total system weight of appx 50 Lbs.